Computer fan cleaning/cooling/OC Genie II

So it's been about a week and a half since I finished my first build and began using it. I noticed on the front of my case fan thing their was a thin layer of dust. It reminded me to ask how often should I clean out the fans, and how I should do it;

Case fans
GPU fan
CPU Heatsink fan

Someone told me to use a pain brush to take the dust off, some a vaccumm, and none of the things sound 'right'.

Now the cooling part, I've recently gotten into rift and while playing my gpu goes to about 56c and my cpu 45c. Are these temperatures safe? Should I manually increase my GPU fan? (it's currently running at about 30% and it says it will adjust automatically to it's needs, but I've never heard it go to 100%)

Also I'm using the built in "one click overclock" that came on my motherboard, any opinions on this? Is it good to use?

Nah, I disagree with your elitist mentality.
Tier gear should be available during the leveling process. I don't want to have to mingle with these eltitist jerks in LFR to get gear as it is. I pay a sub fee, I shouldn't have to do LFR to get raid gear, much less Flex or Normal.

Get a can of compressed air. Take the computer outside on a dry day and give it a once-over with the canned air, making sure to dislodge any dust clumps. Allow the computer to warm back up to room temperature before turning it back on, the compressed air can make the computer parts increasingly cold, which means that any moisture in the vicinity will condense on them, causing a short-circuit when you turn the computer back on again afterwards.

Paintbrushes (especially the nylon ones) collect a static charge very easily, if (or when) that earths through your motherboard, you can probably kiss it goodbye. The same goes for vacuum cleaners.

Nah, I disagree with your elitist mentality.
Tier gear should be available during the leveling process. I don't want to have to mingle with these eltitist jerks in LFR to get gear as it is. I pay a sub fee, I shouldn't have to do LFR to get raid gear, much less Flex or Normal.

Depends on how dirty your house is (no offense). If you have pets you would need to do it more frequently than if you had none, for example. Also if it's on the floor compared to sitting on the counter. I don't know if a precise time you need to clean your computer, that is something I believe you need to figure out based on your living conditions. Find out how long it takes for the front to get covered, then clean it. Do it again about the same time frame. If you find out you aren't really blowing that much out, give it some more time.

Personally I do mine every 5-6 months (and even then it's really clean inside), but I also live in a clean house and not that much dust collects. At the last place I lived I had to do it more frequent as my roommate had dogs and my case would get caked in dust. I'm sure I can do it more often, but I'm lazy.

The temp seems fine to me. Your video card manual should have listed it's max temperature somewhere. Sounds to me like it hasn't hit that point where it needs the fan running at full speed.

I don't have enough experience with overclocking so I'll let someone else help with that. Computers are getting smarter so I would assume it's fine. You can run a test to see how hot your CPU is getting, I use Prime95 but I'm sure there is a better one.

Nah, I disagree with your elitist mentality.
Tier gear should be available during the leveling process. I don't want to have to mingle with these eltitist jerks in LFR to get gear as it is. I pay a sub fee, I shouldn't have to do LFR to get raid gear, much less Flex or Normal.